CaratHunter
Plans
Radiant|Lab Grown|IGI

4.51ct H VS1 Radiant Lab Grown Diamond

EX • H/VS1 • IGI LG684506247

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG684506247

Diamond specifications and retailer prices

From £1,084 GBP
As of October 31, 2026
1 retailer carries this diamond
Only listing: £1,084 GBP at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 4.51ct lab-grown radiant diamond

This 4.51ct lab-grown radiant sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG684506247 or 684506247. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.51
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.6°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG684506247
Dimensions11.76 × 8.08 × 5.42 mm
L/W Ratio1.46
Top View
11.76 mm8.08 mm4.51 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG684506247
Side View
Table 67.0%Crown 45.6°Girdle: MediumPavilion 34.2°Culet: NoneDepth 67.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £749 GBP|Low: £340 GBP|High: £2,353 GBP|Avg: £957 GBP|-5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
April 26, 2026
Retailer 2£436 GBP
Retailer 11£463 GBP
Retailer 7£468 GBP
Retailer 6£650 GBP
Retailer 1£749 GBP
Retailer 4£772 GBP
Retailer 5£853 GBP
Retailer 9£991 GBP
Retailer 10£1,422 GBP
Retailer 8£1,546 GBP
Retailer 3£1,729 GBP

56 data points across 11 retailers

1 retailer

B+
Diamond Quarter
4.51VS1HLG477E18N · Oct 31
£1,084 GBP
View

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
4.51ct Radiant
£1,084 GBP